What if energy flowed from cold to hot regions? How would thermodynamics be different? We examine such an imagined cold-to-hot world, abbreviated here as a C2H world, and show that the unfamiliar direction of energy flow implies that two thermally interacting objects at different temperatures will not equilibrate. We find that there is no…

If a ball rolls at constant speed on a horizontal surface about a horizontal axis then the angular velocity is easily measured. If the ball is projected with additional spin about the vertical axis, then the rotation axis is tilted and it is more difficult to measure the rotation speed. A few examples are presented to show how the separate topspin…

Physical chemistry students often lack conceptual understanding of the measurable quantities derivatives and integrals represent in particular problems. Also, two-parameter equations of state exhibit horizontal inflections at the critical point in the "PV" isotherms, and students must employ the mathematical properties of inflections to…

Students and educators often face time constraints, making it essential to develop interventions that are both easy to implement and have a substantial impact on learning and performance. One promising strategy is retrieval practice, particularly in the context of physics education, where many students struggle with basic knowledge. Prior research…

This article reports on the effect of textbook analysis as a tool of teacher professional development on nature of science (NOS) understanding of 10 science teachers in South Africa. The teacher professional development program (TPDP) was based on an explicit reflective methodology of textbook analysis and conducted online due to the Covid-induced…

Elementary teachers are navigating a curriculum landscape in which engineering activities now exist alongside science. Teacher education should prepare future elementary teachers to be critical curators of curriculum resources, which includes appraising the extent to which engineering and science activities authentically reflect those fields. To…

A framework for K-12 science education (National Research Council [NRC], 2012) supports science learning on social and political issues to make informed decisions and solve problems. Socio-scientific issues have been considered as a context to teach characteristics of nature of science (NOS). This study is a qualitative study in nature to examine…

Erduran and Dagher's (2014) account of the Family Resemblance Approach (FRA) to Nature of Science (NOS) is a relatively new framework that frames NOS in a holistic fashion, inclusive of cognitive-epistemic and social-institutional aspects. This approach has also been referred to as the "Reconceptualized Family Resemblance Approach to Nature…

Values and how values are created in science education are an under-researched field, which is problematic given the importance of epistemic values to the nature of science. From a sociological perspective, values are experienced as emotionally infused ideas with the power to influence choices and actions in everyday situations such as learning…

Green chemistry developed historically from twelve industrial principles for research chemists. Recently, interest has grown to begin introducing these principles in science classrooms even at the secondary and pre-secondary school levels. However, teachers must do significant work to adapt and translate green chemistry from the industrial or…

In the last decades, science literacy has been progressively emphasised as an aim of science education. However, the science education literature does not present a consensus about both the meaning of science literacy. By studying such literature, we identified some of these aspects that may also be relevant for promoting students' critical…

The study explored science and science education professors' nature of science (NOS) understandings and perceptions on NOS instruction before (T1), during (T2), and after (T3) a professional development (PD) series. Using repeated measures design, findings showed an increasing trend across NOS aspects. Summary scores were used to classify…

Today, only people, who truly understand what scientific knowledge is and how it is obtained, are considered scientifically literate. This understanding expected in today's scientific areas is called the nature of science (NOS). This study aimed to determine the perceptions of high school students and their parents regarding NOS. In addition, the…

Integrating science and engineering has become a focal point for current research in science and STEM educational fields. Infusing engineering design as an application of scientific principles is beneficial, as it demonstrates an authentic, real-world application and allows for not only student engagement and enthusiasm, but also an avenue to…

With regard to current controversial public discussions about the credibility of scientific knowledge, it seems particularly important that students possess adequate ideas about the tentativeness of scientific knowledge, which is a key aspect of nature of science. However, international studies show that many pre-service science teachers tend to…